/Engine/Source/Runtime/Core/Public/Stats/Stats.h
Example:FDynamicStats::CreateStatId(FString::Printf(TEXT("MyDynamicStat_%i"),Index) )
template<typename TStatGroup> static [TStatId](API\Runtime\Core\Stats\TStatId) CreateStatId ( const [FString](API\Runtime\Core\Containers\FString) & StatNameOrDescription )